The tweet was quoting Apollo 14 astronaut Edgar Mitchell, the sixth person to walk on the moon. He famously said of viewing Earth from space: “You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, ’Look at that, you son of a bitch.’ ” This quote has been cited as an example of the overview effect, a perspective shift toward global unity and conservation reported by astronauts struck by the planet’s fragility.